Power Acoustik PWM-70 7-Band Parametric Equalizer 2 selectable balanced inputs Selectable input sensitivity 20Db headroom, 30V bipolar power supply Seven Bands Parametric Equalizer With 1 Db Boost Volume Control With Up To 8V Rms Of Output Specific Bandwidth For Each Band Low Noise Bi-Fet Op-Amp Design Yields Minimum Distortion On-Board 30V Bi-Polar Switching Power Supply